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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client: EMCON Associates Service Request: S941424 <br /> Project: TOSCO#11192/0952-090.02 Date Collected: 11/9,10/94 <br /> Sample Matrix: Soil Datc Received_ 11/11/94 <br /> Datc Extracted: NA <br /> Date Analyzed: 11/15/94 <br /> Surrogate Rcoovery Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/8010 <br /> Percent Recovery <br /> Sample Name Lab Code 4-Bromofluorobenzene <br /> 11192 THP4S-25 5941424-002 118 <br /> 11192 THP1S-25 S941424-004 123 <br /> 11192THP2S-25 5941424-006 104 <br /> 11192-THP3S-25 S941424-008 106 <br /> Method Blank 5941115-SB 103 <br /> 6 <br /> CAS Acceptance Limits: 79-141 <br /> Approved By: .., , (�d�l d{� _�- L� Date: -.2 3-q c <br /> SMIM62"4 •� <br /> Page 15 of 15 <br /> 1071 Ainn..•nnrl A........,. — c�� _�.. F..1ii..�..i.. (1�I1. <br />